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| Author | Brosnan, S.F.; de Waal, F.B.M. | ||||
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A concept of value during experimental exchange in brown capuchin monkeys, Cebus apella | Type | Journal Article | ||
| Year | 2004 | Publication | Folia primatologica; international journal of primatology | Abbreviated Journal | Folia Primatol (Basel) |
| Volume | 75 | Issue | 5 | Pages | 317-330 |
| Keywords | Animals; Cebus/*psychology; *Choice Behavior; Female; Food Preferences; *Learning; Male; Sex Factors; Statistics, Nonparametric; *Token Economy; Video Recording | ||||
| Abstract | We evaluated the response of brown capuchin monkeys to two differentially valued tokens in an experimental exchange situation akin to a simple barter. Monkeys were given a series of three tests to evaluate their ability to associate tokens with food, then their responses were examined in a barter situation in which tokens were either limited or unlimited. Capuchins did not perform barter in the typical sense, returning the tokens which were associated with the reward. However, females, but not males, showed a different response, preferring the higher-value token. This may indicate that they learned to prefer one token over the other rather than to associate the tokens with their specific rewards. This sex difference parallels previous findings of greater reciprocity in female brown capuchins than in males. | ||||
| Address | Living Links Center, Emory University, Yerkes National Primate Research Center, 954 N. Gatewood Drive, Atlanta, GA 30329, USA. sbrosna@emory.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0015-5713 | ISBN | Medium | ||
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| Notes | PMID:15486443 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 170 | ||
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| Author | Goodwin, D.; Davidson, H.P.B.; Harris, P. | ||||
| Title |
A note on behaviour of stabled horses with foraging devices in mangers and buckets | Type | Journal Article | ||
| Year | 2007 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 105 | Issue | 1-3 | Pages | 238-243 |
| Keywords | Stabled horse; Behaviour; Foraging device; Management; Edinburgh foodball | ||||
| Abstract | Processed feed for stabled horses is usually presented in buckets or mangers, and is easily and rapidly consumed. Foraging devices based on the Edinburgh foodball can be used to provide part of the ration. Current designs are all placed on the floor, raising concerns regarding ingestion of foreign materials along with the dispensed food. Alternative devices were evaluated, when presented within suitable, clean containers to prolong food-handling times but avoid such issues. In four Latin square designed replicated trials we investigated behaviour of 12 stabled horses with three foraging devices. These were separately presented for 5 min, varied in sensory complexity (round, square, polyhedral) and contained 500 g high fibre pellets. In Trials 1 and 2 six geldings were presented with devices in buckets then mangers. All individuals foraged successfully from at least one device and behaviour was compared. However, all individuals exhibited some frustration while using the devices (either pawing or biting them). Horses frequently removed the devices from the buckets in Trial 1 terminating these sessions. In Trial 2 mean device foraging duration was ranked polyhedral > round > square. Mean pawing rate in Trial 2 was calculated for horses (frequency of pawing per individual/summed duration manipulation and foraging) and was highest with square (0.11, npawers = 6). In Trial 3 six stabled mares were presented with the same foraging devices in mangers. Mean foraging duration with devices again ranked polyhedral > round > square. Mean pawing rate was highest with round device (0.08, npawers = 4). Trial 4 investigated behaviour of six horses when devices initially containing five high fibre pellets became empty. Mean foraging duration with devices ranked round > polyhedral > square. Mean pawing rate was highest with square device (0.11, npawers = 4). All horses foraged successfully from at least one foraging device in buckets and mangers. Devices met initial objectives but the unpredictability of reward suggests a source of frustration and warrants further investigation. | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ knut @ | Serial | 4345 | ||
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| Author | Meriggi,A.; Lovari, S. | ||||
| Title |
A Review of Wolf Predation in Southern Europe: Does the Wolf Prefer Wild Prey to Livestock? | Type | Journal Article | ||
| Year | 1996 | Publication | Journal of Applled Ecology | Abbreviated Journal | J. Appl. Ecol |
| Volume | 33 | Issue | Pages | 1561-1571 | |
| Keywords | Canis lupus, conservation, food habits, prey abundance, prey availability. | ||||
| Abstract | 1. The recent recovery of the wolf in southern Europe has not yet removed the risk of local extinction. Wolf populations are fragmented and often comprise fewer than 500 individuals. In North America, northern and eastern Europe, wolves feed maiiily on wild herbivores. In southern Europe, this canid has apparently adapted to feed also on fruit, rubbish, livestock, small and medium-size mammals. 2. The main conservation problem lies with predation o n domestic ~ingulates,w liich leads to extensive killing of wolves. The reintroduction of wild large herbivores has been advocated as a means of reducing attacks on livestock, but predatiori on the latter may remain high if domestic ungulates are locally abundant. 3. Our synthesis of 15 studies, published in the last 15 years, on food habits of the wolf in southern Europe, has shown that ungulates have been the main diet component overall. A significant inverse correlation was found between the occurrence (%) of wild and domestic ungulates in the diet. The presence of relatively few wild ungulate species was necessary to reduce predation on livestock. 4. Selection of wild and domestic ungulate prey was influenced mainly by their local abundance, but also by their accessibility. Feeding dependence on rubbish was local and rare. In Italy, the consumption of riibbish/fruit and that of ungulates was significantly negatively correlated. Diet breadth increased as the presence of large prey in tlie diet decreased. 5. The simultaneous reintroduction of severa1 wild ungulate species is likely to reduce predation on livestock and may prove to be one of the most effective conservation measures. |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 6387 | ||
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| Author | Weatherly, J.N.; Arthur, E.I.L.; Tischart, L.M. | ||||
| Title |
Altering “motivational” variables alters induction produced by upcoming food-pellet reinforcement | Type | Journal Article | ||
| Year | 2003 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 6 | Issue | 1 | Pages | 17-26 |
| Keywords | Animals; *Conditioning, Operant; Food Deprivation; Male; *Motivation; Rats; Rats, Sprague-Dawley | ||||
| Abstract | Previous research has demonstrated that rats will increase their rates of lever pressing for sucrose rewards in the first half of an experimental session when food pellets, rather than the same sucrose, continually serve as the reward in the second half of the session. This effect has been coined induction, and the present study investigated whether it could be altered by altering “motivational” variables. Experiment 1 manipulated subjects' motivation by altering, across conditions, their level of food deprivation. Predictably, the size of induction varied directly with level of deprivation. Experiments 2 and 3 manipulated subjects' motivation by feeding them food pellets and sucrose, respectively, prior to their responding in the experimental session. These pre-session feedings decreased the size of the observed induction in both experiments. The results from the present study indicate that the size of induction is correlated with subjects' motivation to respond for the available reinforcers. They are also consistent with the idea that operant processes underlie the effect. The notion that induction might encompass the concept of “anticipation” is also discussed. | ||||
| Address | Department of Psychology, University of North Dakota, ND 58202-8380, Grand Forks, USA. jeffrey_weatherly@und.nodak.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1435-9448 | ISBN | Medium | ||
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| Notes | PMID:12658532 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2584 | ||
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| Author | Shettleworth, S.J. | ||||
| Title |
Animal behaviour: planning for breakfast | Type | Journal Article | ||
| Year | 2007 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 445 | Issue | 7130 | Pages | 825-826 |
| Keywords | Animals; Feeding Behavior/*physiology; *Food; Haplorhini/physiology; Memory/physiology; Songbirds/*physiology; Thinking/*physiology | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1476-4687 | ISBN | Medium | ||
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| Notes | PMID:17314961 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 356 | ||
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| Author | Dyer, F.C. | ||||
| Title |
Animal behaviour: when it pays to waggle | Type | |||
| Year | 2002 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 419 | Issue | 6910 | Pages | 885-886 |
| Keywords | *Animal Communication; Animals; Bees/*physiology; California; Dancing/physiology; Environment; Evolution; Female; Flowers/chemistry; *Food; Gravitation; Lighting; Motor Activity/*physiology; Odors; Seasons; Sunlight | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0028-0836 | ISBN | Medium | ||
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| Notes | PMID:12410290 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 769 | ||
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| Author | Pennisi, E. | ||||
| Title |
Animal cognition. Social animals prove their smarts | Type | |||
| Year | 2006 | Publication | Science (New York, N.Y.) | Abbreviated Journal | Science |
| Volume | 312 | Issue | 5781 | Pages | 1734-1738 |
| Keywords | Animals; *Behavior, Animal; *Birds; *Cognition; Comprehension; Cues; Food; Hominidae/*psychology; *Intelligence; Learning; Memory; *Social Behavior | ||||
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| ISSN | 1095-9203 | ISBN | Medium | ||
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| Notes | PMID:16794055 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2836 | ||
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| Author | Takimoto, A.; Kuroshima, H.; Fujita, K. | ||||
| Title |
Capuchin monkeys (Cebus apella) are sensitive to others’ reward: an experimental analysis of food-choice for conspecifics | Type | Journal Article | ||
| Year | 2010 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 13 | Issue | 2 | Pages | 249-261 |
| Keywords | Other-regarding preference – Prosocial behavior – Inequity aversion – Food sharing – Social sensitivity – Capuchin monkeys | ||||
| Abstract | Abstract The issue whether non-human primates have other-regarding preference and/or inequity aversion has been under debate. We investigated whether tufted capuchin monkeys are sensitive to others’ reward in various experimental food sharing settings. Two monkeys faced each other. The operator monkey chose one of two food containers placed between the participants, each containing a food item for him/herself and another for the recipient. The recipient passively received either high- or low-value food depending on the operator’s choice, whereas the operator obtained the same food regardless of his/her choice. The recipients were either the highest- or lowest-ranking member of the group, and the operators were middle-ranking. In Experiment 1, the operators chose the high-value food for the subordinate recipient more frequently than when there was no recipient, whereas they were indifferent in their choice for the dominant. This differentiated behavior could have been because the dominant recipient frequently ate the low-value food. In Experiment 2, we increased the difference in the value of the two food items so that both recipients would reject the low-value food. The results were the same as in Experiment 1. In Experiment 3, we placed an opaque screen in front of the recipient to examine effects of visual contact between the participants. The operators’ food choice generally shifted toward providing the low-value food for the recipient. These results suggest that capuchins are clearly sensitive to others’ reward and that they show other-regarding preference or a form of inequity aversion depending upon the recipients and the presence of visual contact. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5118 | ||
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| Author | Bräuer, J.; Call, J.; Tomasello, M. | ||||
| Title |
Chimpanzees do not take into account what others can hear in a competitive situation | Type | Journal Article | ||
| Year | 2008 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 11 | Issue | 1 | Pages | 1435-9448 |
| Keywords | Social cognition – Food competition – Perspective taking | ||||
| Abstract | Chimpanzees (Pan troglodytes) know what others can and cannot see in a competitive situation. Does this reflect a general understanding the perceptions of others` In a study by Hare et al. (2000) pairs of chimpanzees competed over two pieces of food. Subordinate individuals preferred to approach food that was behind a barrier that the dominant could not see, suggesting that chimpanzees can take the visual perspective of others. We extended this paradigm to the auditory modality to investigate whether chimpanzees are sensitive to whether a competitor can hear food rewards being hidden. Results suggested that the chimpanzees did not take what the competitor had heard into account, despite being able to locate the hiding place themselves by the noise. | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ knut @ | Serial | 4218 | ||
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| Author | Voelkl, B.; Huber, L. | ||||
| Title |
Common marmosets (Callithrix jacchus) do not utilize social information in three simultaneous social foraging tasks | Type | Journal Article | ||
| Year | 2007 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 10 | Issue | 2 | Pages | 149-158 |
| Keywords | Marmosets – Social foraging – Social information – Food competition | ||||
| Abstract | Abstract Social foraging is suggested to increase foraging efficiency, as individuals might benefit from public information acquired by monitoring the foraging activities of other group members. We conducted a series experiments with captive common marmosets (Callithrix jacchus) to investigate to what extent marmosets utilize social information about food location when foraging simultaneously with conspecifics. Subjects were confronted with dominant and subordinate demonstrators in three experiments which differed in the amount of information about food location available to the demonstrators. In all three experiments, the focal subjects` performance in the social condition was not enhanced in comparison to a non-social control condition. Because we could rule out kleptoparasitism and aggressive displacements as explanations, we argue that the subjects tendency for scramble competition by avoiding others and dispersing over the foraging area seems to inhibit or mask the acquisition of social information about the location of rewarded patches. | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ knut @ | Serial | 4220 | ||
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